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arm64: dts: meson: g12a: x96-max: fix PHY deassert timing requirements
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According to the datasheet (Rev. 1.9) the RTL8211F requires at least
72ms "for internal circuits settling time" before accessing the PHY
registers. On similar boards with the same PHY this fixes an issue where
Ethernet link would not come up when using ip link set down/up.

Fixes: ed5e8f6 ("arm64: dts: meson: g12a: x96-max: fix the Ethernet PHY reset line")
Reviewed-by: Martin Blumenstingl <[email protected]>
Signed-off-by: Stefan Agner <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
Link: https://lore.kernel.org/r/12506964ca5d5f936579a280ad0a7e7f9a0a2d4c.1607363522.git.stefan@agner.ch
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agners authored and khilman committed Dec 7, 2020
1 parent 656ab1b commit 3d07c3b
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts
Original file line number Diff line number Diff line change
Expand Up @@ -340,7 +340,7 @@
eee-broken-1000t;

reset-assert-us = <10000>;
reset-deassert-us = <30000>;
reset-deassert-us = <80000>;
reset-gpios = <&gpio GPIOZ_15 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>;

interrupt-parent = <&gpio_intc>;
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